催化干气回收乙烯工艺的工业应用  

Commercial application of the technique of recovering ethylene from catalytic dry gas

作　　者：王建 夏荣安 周天基 王崇明 齐玉荣 

机构地区：[1]中国石油兰州石化分公司,甘肃兰州730060

出　　处：《石化技术与应用》2006年第5期378-381,共4页Petrochemical Technology & Application

摘　　要：进行了炼厂催化干气经变压吸附浓缩及精制除杂后用作乙烯裂解原料的工业实践。结果表明:利用干气作乙烯裂解原料,当其质量分数为总裂解原料的7.44%时,可使乙烯物耗由3.163t/t降低至3.066t/t,能耗由29.45GJ/t下降至29.39GJ/t。精制干气中CO2,CO含量超标及乙烷含量偏高,影响了乙烯装置的运行,但通过采取增大碱洗时新鲜碱液的用量、提高甲烷化反应温度、优化乙烯精馏塔操作条件等措施,可实现乙烯装置的安全稳定运行。Refinery catalytic dry gas was processed into feedstocks of ethylene cracking by pressure swing adsorption concentration and refining removal of impurities. The results showed that the material consumption of ethylene decreased from 3. 163 t/t to 3. 066 t/t,and the energy consumption of ethylene decreased from 29.45 GJ/t to 29. 39 GJ/t when the mass fraction of dry gas in total ethylene cracking feedstocks was 7.44% . That the contents of CO2 , CO and ethane in refinery dry gas exceeded quality requirement influenced on the process of ethylene production. It was realizable for ethylene equipment to run safely and stable by increasing amount of fresh alkali liquor during alkali wash, increasing the reaction temperature of methanation and optimizing the operation condition of ethylene fractionating tower.

关 键 词：催化干气 乙烯 变压吸附 精制 炼化一体化 

分 类 号：TE634.31[石油与天然气工程—油气加工工程]